Zack Magilavy says his little boy Charlie asks to "workout with Rocky," and takes the training "very seriously." Magilavy adds that Charlie is not exposed to the fight scenes and "yes, his TV time is very limited."

The video has received millions of views online. Stallone reposted it to Instagram on Wednesday with a note saying "this kid makes me so proud that it touches a heart so young." He jokes that he may have to fight the boy in "Rocky 10."